diff --git a/pkgs/development/libraries/haskell/yesod-bin/default.nix b/pkgs/development/libraries/haskell/yesod-bin/default.nix
index a7925e82b107..3dfedd471fec 100644
--- a/pkgs/development/libraries/haskell/yesod-bin/default.nix
+++ b/pkgs/development/libraries/haskell/yesod-bin/default.nix
@@ -10,8 +10,8 @@
 
 cabal.mkDerivation (self: {
   pname = "yesod-bin";
-  version = "1.2.2";
-  sha256 = "03c53kgiqmjjihszmvqjgkcklq28mvyn4m2lhcbmqqzkkzyjb0rj";
+  version = "1.2.2.1";
+  sha256 = "0m68wm46qh8bwaccq2y8l4hh4xby0kczvhgd7caaxhmv6j3srrf2";
   isLibrary = false;
   isExecutable = true;
   buildDepends = [